Column segment

ABSTRACT

A column segment comprising a body having at least one external channel, an upper protrusion extending from a top side of the body, and a lower protrusion extending from a bottom side of the body, wherein the at least one external channel further comprises an outer angled wall arranged to receive a securing means and direct said securing means through the at least one external channel, wherein the upper protrusion includes a domed portion and a plurality of locating slots, wherein the lower protrusion includes a domed recess and a plurality of projections, and wherein a first column segment is stackable with a second column segment by the domed portion and the locating slots of the first column segment matingly engaging with the domed recess and the projections of the second column segment.

FIELD OF THE INVENTION

The invention relates to improvements in arena barriers and structures. In particular, the invention relates to arena column segments easily adaptable to a variety of arrangements in order to create customizable arena structures with a small variety of components.

BACKGROUND OF THE INVENTION

Barriers and structures in arenas, laser tag arenas in particular, are well-known and are used for a variety of purposes, including preventing access to restricted areas, forming archways, defining pathways, or forming structures and fortifications for opposing teams competing in the arena. Of course other activities, primarily recreational in nature, such as paintball, may utilize such barriers and structures. When traditional barriers are used to form structural elements, the stacking and connection of the barriers is often cumbersome or difficult since the barrels do not securely lock together efficiently, and may require extraneous brackets, braces, or plates to connect the barriers, columns, and structures together.

Traditionally, laser tag arenas have used large plastic barrels with hollow interiors as both arena barriers and structural elements. In order to connect multiple barriers, the barriers must be individually connected with screws at multiple places along the connection area for each barrier connection. The task of connecting multiple barriers in this way is difficult since the installer must place several screws at each barrier connection from a ladder. In addition, the above connection method requires screws to be installed at an angle with respect to the installation surface, thereby increasing difficulty.

Another concern with traditional laser tag arenas is the connection of barrier walls at various locations within the play arena. In traditional laser tag arenas, barrier walls are forced against the barrier and connected to the barrier by screws installed at an angle such that the screw travels through the barrier wall and into the barrier. Installing screws at an angle is less convenient than perpendicularly installing a screw into a wall, but provides a better connection between the wall and barrier to which the wall is being attached. However, since the screws are being installed at an angle, the head of the screw may not completely press into the wall, leaving a portion of the screw protruding from the wall. If a competitor or player accidentally rubs or presses against the screw head, he or she could be injured. Player safety is paramount in the design of such arenas, and causes of injuries, such as protruding screws, must be prevented. Furthermore, it is important for the barriers and walls to be made of material which is fire resistant or includes self-extinguishing additives. In the event of a disaster, fire resistant materials will impede the spread of fire, and allow the players ample time to escape the arena. Traditional barriers are not easily made with flame resistant and self-extinguishing additives.

Therefore, there is a long-felt need for a arena barrier which is easily adaptable to a variety of structures with minimal connection efforts and no brackets, braces, or plates, can easily and safely mount barrier walls, and can be produced from fire resistant materials.

BRIEF SUMMARY OF THE INVENTION

The present invention broadly comprises a column segment having a body with at least one external channel, an upper protrusion extending from a top side of the body, and a lower protrusion extending from a bottom side of the body. In one embodiment, the at least one external channel includes an outer angled wall arranged to receive a securing means and direct the securing means through the at least one external channel. In a preferred embodiment, the upper protrusion further includes a plurality of locating slots located the upper protrusion. In another embodiment, the upper protrusion includes a domed portion with a flat top extending away from the body and located radially inward of the locating slots.

In another embodiment, the upper protrusion includes a first partially weakened groove located radially outward of the locating slots and a second partially weakened groove located about the flat top. In yet another embodiment, a cap segment is located in a top portion of the body upon removal of the first partially weakened groove. In yet another preferred embodiment, the lower protrusion further includes a plurality of projections located about an outer portion of the lower protrusion and a partially weakened groove located radially outward of the plurality of projections. In another embodiment a spacer segment is located in a lower portion of the body upon removal of the partially weakened groove. In a further embodiment, the lower protrusion includes a domed recess.

In one embodiment, the lower protrusion includes a domed recess and a plurality of projections, and wherein a first column segment is stackable with a second column segment by the domed portion and the locating slots of the first column segment matingly engaging with the domed recess and the projections of the second column segment. In another embodiment, the upper protrusion and the lower protrusion each include a centrally located through hole wherein the through holes for both the upper and lower protrusions are aligned with respect to each other. In yet another embodiment, the body is generally cylindrical and symmetrical.

The present invention also broadly comprises a column segment assembly including at least one column segment having an upper protrusion, a lower protrusion, and a through hole and wherein each subsequent column segment is stacked atop a preceding column segment if the column segment assembly includes more than one column segment, a final column segment having an upper protrusion, a lower protrusion, a through hole, an internal shoulder securing a mounting plate, and a mounting nut, a mounting rod, and wherein the final column is stacked atop the at least one column segment and the mounting rod traverses through the through holes in the at least one column segment and the lower protrusion of the final column segment, and wherein the mounting rod is secured within the final column segment to the mounting plate by the mounting nut. In a preferred embodiment, the final column segment lower protrusion receives the at least one column segment upper protrusion. In one embodiment, the at least one column segment includes a plurality of locating slots and the final column comprises a plurality of projections. In another embodiment, the plurality of projections matingly engages with the plurality of locating slots.

The present invention further broadly comprises a laser tag arena including a plurality of column segments each having an upper protrusion, a lower protrusion, and at least one external channel having an angled outer surface, at least one final column segment having an upper protrusion, a lower protrusion, at least one external channel having an angled outer surface, an internal shoulder securing a mounting plate, and a mounting nut, a floor having at least one mounting rod extending thereform and traversing through the plurality of column segments, the lower protrusion of the final column segment, and the mounting plate, wherein the mounting nut secures the mounting rod in place through the column segments, at least one retaining wall, and wherein the at least one retaining wall is located in at least one external channel of at least one column segment in the plurality of column segments or the final column segment. In yet another embodiment, a plurality of fasteners secure the retaining wall in at least one external channel in at least one of the column segments.

One object of the present invention is to provide a column segment which is easily installed in a variety of arrangements and easily mountable on an arena floor.

Yet another object of the present invention is to provide a laser tag arena comprised of the aforementioned column segments in a manner so as to promote player safety.

These and other objects and advantages of the present invention will be readily appreciable from the following description of preferred embodiments of the invention and from the accompanying drawings and claims.

BRIEF DESCRIPTION OF THE DRAWINGS

The nature and mode of operation of the present invention will now be more fully described in the following detailed description of the invention taken with the accompanying drawing figures, in which:

FIG. 1 is a perspective view of a preferred embodiment column segment of the present invention;

FIG. 2 is a front view of the column segment shown in FIG. 1;

FIG. 3 is a top view of the column segment shown in FIG. 1;

FIG. 4 is a bottom view of the column segment shown in FIG. 1;

FIG. 5 is an exploded perspective view of the column segment shown in FIG. 1;

FIG. 6 is a front view of a plurality of current invention column segments arranged into a representative structure for an arena;

FIG. 7 is a detailed view of area 7 in FIG. 6 illustrating a wall mounting arrangement;

FIG. 8 is a front view of a first current invention column segment stacked atop a second column segment;

FIG. 9 is an exploded view of the first and second column segments of FIG. 8 including a cut-out portion showing a mounting plate and nut inside the first column segment for connecting to the second, as well as mounting components for securing the columns to a floor; and,

FIG. 10 is a front exploded view of a current invention column segment with its upper and lower portions removed and arranged to receive a cap and a spacer segment.

DETAILED DESCRIPTION OF THE INVENTION

At the outset, it should be appreciated that like drawing numbers on different drawing views identify identical, or functionally similar, structural elements of the invention. While the present invention is described with respect to what is presently considered to be the preferred aspects, it is to be understood that the invention as claimed is not limited to the disclosed aspects.

Furthermore, it is understood that this invention is not limited to the particular methodology, materials and modifications described and as such may, of course, vary. It is also understood that the terminology used herein is for the purpose of describing particular aspects only, and is not intended to limit the scope of the present invention, which is limited only by the appended claims.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood to one of ordinary skill in the art to which this invention belongs. Although any methods, devices or materials similar or equivalent to those described herein can be used in the practice or testing of the invention, the preferred methods, devices, and materials are now described.

FIGS. 1 and 2 are a perspective view and a front view, respectively, of a preferred embodiment of present invention column segment 100. FIGS. 3 and 4 are a top view and a bottom view, respectively of a preferred embodiment of present invention column segment 100. The following should be read in light of FIGS. 1 through 4. Column segment 100 includes body 102, upper protrusion 104, and lower protrusion 106. In the shown embodiment, upper protrusion 104 extends generally away from the top side of body 102. Also in the shown embodiment, lower protrusion 106 is generally cylindrical, having a smaller radius than body portion 102, and extends away from the bottom side of body 102.

In a preferred embodiment, body 102 is generally cylindrical in shape and symmetrical about any vertical plane which passes through the center of the body. However, it should be immediately apparent to one of ordinary skill in the art that column segment 100 and more particularly body 102 could be any shape, such as rectangular, or polygonal, and need not necessarily be symmetrical so long as channels 108 of stacked column segments can be aligned.

Body 102 also includes a plurality of channels 108 which are arranged along the vertical length of body 102. In a preferred embodiment, channels 108 are symmetric and uniform so that each of the channels will line up with the channels of another column segment if several columns are stacked atop one another. Spaced circumferentially to each side of the channels are outer angled walls 110. By spaced circumferentially, we mean that the angled walls are spaced away from the channels generally along the circumference of the column. Outer angled wall 110 is angled away from channel 108 to allow easy installation of a bolt or screw. When the bolt or screw is installed through outer angled wall 110, the bolt or screw is then directed through channel 108, thereby securing anything located within channel 108 to column segment 100. Thus, if a wall is inserted into channel 108, a screw installed perpendicular to outer angled wall 110 will enter the wall at an angle. As a result, it is extremely unlikely that a screw head will protrude out from the angled wall, thus reducing the chance of a player being injured. Additionally, the screw will enter the wall at an angle, thereby creating a better connection between the wall in channel 108 and the column segment.

Body 102 also includes marking grooves 112. Marking grooves 112 are vertically disposed along the length of body 102 and include a flat recessed portion adapted to receive paint or a sticker. The paint or sticker can be used for example, to designate differently colored or patterned zones within the arena. For example, in a laser tag arena, two opposing teams could be designated by the colors red and blue. Red paint or red stickers would then indicate that the column segments that are part of the red team's portion of the play field, while blue paint or blue stickers would indicate the blue team's portion of the arena. Similar to channels 108, there are a plurality of marking grooves 112 which are symmetric and uniformly arranged so that players can quickly and easily ascertain where they are currently located within the arena based on the color of the marking grooves.

Upper protrusion 104 includes base 114, raised segments 116, domed portion 118, flat top 120, and upper through hole 122. Base 114 is generally flat with raised segments 116 incrementally located about the circumference of base 114 and extending inward until reaching the radially outward end of domed portion 118. By radially outward, we mean a distance in a radial direction with respect to the center of the column segment. Raised segments 116 form locating slots 124 in base 114, of which a plurality are shown. Locating slots 124 are circumferentially located about base 114 and are arranged to receive projections of lower protrusion 106 (described infra). Similar to other features of column segment 100, in a preferred embodiment, locating slots 124 are symmetric and generally arranged in a circular pattern about the top of the column segment. It should be apparent that the locating slots need not be arranged circularly if the column segment is made which is not cylindrical.

Domed protrusion 118 is radially inward of raised segments 116 and extends away from body 102 in a generally domed shape. At the peak of domed protrusion 118 is flat top 120. Flat top 120 is arranged in generally horizontal plane and includes upper through hole 122 and inner partially weakened groove 126. Upper through hole 122 is centrally located within both flat top 120 and column segment 100. By centrally located, we mean that upper through hole 122 is located at the radially central portion of flat top 120. Inner partially weakened groove 126 is radially located between upper through hole 122 and domed protrusion 118. Inner partially weakened groove 126 is a generally circular groove about flat top 120. since some of the material of the flat top is removed to form the groove, the thickness of the material about the groove is thinner, and therefore structurally weaker, than the surrounding material, thereby allowing easier removal, if necessary, of the portion of flat top 120 which is radially inward of inner partially weakened groove 126.

In a preferred embodiment, upper protrusion 104 includes outer partially weakened perforations 128 located radially outward of domed protrusion 118. Outer partially weakened perforations 128 are located within locating slots 124, and interrupted by raised segments 116. However, it should be apparent that outer partially weakened groove 128 could also be included in raised segments 116.

Lower protrusion 106 includes projections 130 circumferentially located about the bottom of the lower protrusion. Projections 130 are separated by spacers 132. In a preferred embodiment, projections 130 are symmetrically located about the perimeter of lower protrusion 106 and aligned with locating slots 124 of upper protrusion 104, while spacers 132 are aligned with raised segments 116. Thus, when a first column segment is stacked on a second column segment, slots 124 and raised segments 116 of the first segment engage with projections 130 and spacers 132 of the second column segment, respectively. Lower protrusion 106 also includes a plurality of reinforcement slots 134 vertically displaced along lower protrusion 106. Slots 134 are used to increase the durability and rigidity of lower protrusion 106 and column segment 100.

In general, lower protrusion 106 extends away from body 102 in a cylindrical shape having a smaller radius than the body portion of the column segment. Radially inward of projections 130 and spacers 132, is domed recess 133. Recess 133 includes flat portion 135, which resembles flat top 120 on dome 118. Recess 133 is arranged so that when a first column segment is stacked on a second column segment, dome 118 of the second column segment matingly within domed recess 133. Lower partially weakened groove 136 is located radially outward of projections 130 while bottom through hole 138 is centrally located in lower protrusion 106. Bottom through hole 138 is radially aligned with upper through hole 138. By radially aligned, we mean that the bottom through hole and the upper through hole share the same central axis, with respect to the column segment. Since the bottom through hole and the upper through hole are radially aligned, column segment 100 can receive a vertical mounting rod through the entire length of the column segment, as will be discussed infra.

FIG. 5 is an exploded perspective view of a preferred embodiment column segment of the present invention. Column segment 100 is shown with top disc 140 removed at inner partially weakened groove 126. Top disc 140 is the portion of flat top 120 that is radially inside of groove 126. Upper protrusion 104 is shown removed from body 102 at outer partially weakened groove 128. Lower protrusion 106 is shown removed from body 102 at lower partially weakened groove 136. Advantageously, lower protrusion 106 also includes inner shoulders 144, formed about slots 134, which are used to secure a mounting plate (described infra). Although a plurality of inner shoulders are shown in FIG. 5, it should be apparent to one of ordinary skill in the art that any number of shoulders could be used, or that the shoulder could be one continuous ring about the interior of the lower protrusion.

The following should be view in light of FIGS. 1 through 8, where FIGS. 6 and 7 are a front view of column segment assembly 150 and a detailed view of area 7 in FIG. 6, respectively. FIG. 8 is a front view of a first column segment located atop a second column segment. In a preferred embodiment, multiple column segments 100 are stacked atop each other with the domed portions of each column segment located within the domed recess of the lower protrusion of the subsequent column segment. Advantageously, projections 130 of lower protrusion 106 align with locating slots 124 of upper protrusion 104, thereby aligning channels 108 of each column segment 100. Since column segments 100 are each similarly shaped and symmetrical, retaining wall 152 can be located within any channel 108 of a column segment. Retaining wall 152 could be located within any set of channels and therefore enables customization of the column segment assembly. The preceding embodiment is an illustrative example only and is not intended to limit the scope of the invention as claimed since any number of column segments and retainer walls can be used in various arrangements.

Retainer wall 152 is removeably secured within channels 108 with securing means 154, as shown in FIG. 7. Securing means 154 may be screws, bolts, rivets, or the like, and are installed through outer angled wall 110. As described supra, outer angled wall 110 includes a flat surface directed away from channel 108 at an angle so that securing means 154 can be easily installed without disturbance from the surrounding structure, and without leaving a screw or bolt head protruding from the column segment. In an alternative embodiment, column segment assembly 150 includes upper mounting structure 156 which connects the top column segment of each stack of column segments. Upper mounting structure 156 is attached to each top column segment upon removal of the upper protrusion at outer partially weakened groove such that upper mounting structure 156 can be located within the top of each body.

FIG. 8 shows first column segment 100A stacked atop second column segment 100B. It should be appreciated that column segments 100A and 100B are substantially identical, and given slightly different reference numerals for identification only. It can be seen that only domed portion 104A can be seen, because the domed portion for second column segment 100B is engaged in lower protrusion 106A of the first column segment.

FIG. 9 is a exploded view of two column segments 162 and 164 being mounted on mounting rod 160. Column segments 162 and 164 are the same as column segment 100. Mounting rod 160 is fixedly secured to an arena floor (not shown) using any connection means known in the art and extends generally perpendicular from the floor. For example, in a preferred embodiment, anchor 184 is pounded into a hole in a concrete or cement floor, which engages ring 188 over plug 186, tightly holding the anchor in the concrete. Threaded rod 190 secures into the anchor, and is tightened down by nut 192. An elongated nut 194 is then threaded onto the remaining portion of threaded rod 190 so that approximately the top half of the elongated nut is unoccupied, so that mounting rod 160 can secure into the elongated nut. Since each column segment includes a domed recess, all of the mounting components are generally housed in the domed recess so that the lower protrusions of the column segments can rest flush against the floor. Mounting rod 160 is then passed through column segment 162 at the lower through hole (not shown) and upper through hole 122. The bottom of column segment 162 rests on the arena floor, while the top of column segment 162 receives, or matingly engages with, column segment 164. By this, we mean that the upper protrusion of column segment 162 is arranged to receive the lower protrusion of column segment 164. In particular, locating slots 124, raised segments 116, and domed recess 133 (not shown) are arranged to receive projections 130, spacers 132, and domed portion 118, respectively.

Inner partially weakened groove 126 is removed to allow installation of mounting plate 166. Mounting plate 166 rests on inner shoulder 144 (described supra). Mounting plate 166 includes a central through hole which is arranged to receive mounting rod 160, when column segment 164 is located atop column segment 162 and on mounting rod 160. Once mounting rod 160 passes through mounting plate 166, washer 168 and nut 170 are removeably secured to mounting rod 160. When nut 170 is secured to mounting rod 160, both of the column segments are held by tension between mounting plate 166 and the arena floor. The preceding example is for illustrative purposes only, as it should be apparent to one or ordinary skill in the art that multiple column segments could be stacked atop one another so long as the final column segment includes mounting plate 166 and mounting nut 170. Thus, in the embodiment shown in FIG. 9, column segment 164 is the final column segment. In addition, the length of mounting rod 160 must be adjusted to accommodate the desired number of column segments, which is within the spirit and scope of the invention as claimed. Advantageously, this arrangement allows multiple column segments to be mounted with only a single nut, such as nut 170, thereby reducing installation time and difficulty.

FIG. 10 is a front exploded view of column segment 100 with the upper and lower protrusions removed at the outer partially weakened groove and the lower partially weakened groove, respectively. Spacer segment 172 is a generic column segment which does not include the elements and advantages of the current invention column segment. Spacer segment 172 may be included between current invention column segments, or where walls and other barriers do not need to be utilized. The spacer segment includes shoulder 175 and 177, arranged generally about top and bottom protrusions 174 and 176. Spacer segment 172 may also be used to connect two column segments (not shown), whereby protrusion 174 is located in the bottom of body 102 of the upper column segment and body 102 rests on shoulder 175 of the spacer segment. If the spacer segment were to placed atop a current invention column segment, protrusion 176 would engage within body 102, while the spacer segment would rest on the column segment by shoulder 177. Spacer segment 172 further includes a center through hole (not shown) centrally located similar to the through hole of column segment 100 to enable a mounting rod to pass through the segment.

Cap segment 178 includes protrusion 179 located below top portion 182, which forms shoulder 180. Similar to the spacer segment, protrusion 179 of the cap segment engages within the top of body 102 upon removal of the upper protrusion at the outer partially weakened groove, and the cap segment rests on the column segment by shoulder 180. Cap segment 178 is generally only used at the top of the upper most column segment of each column segment assembly for indicating that the cap is the top of a series of stacked column segments. Since cap segment 178 is only located atop the upper most column segment, mounting rod 160 does not need to reach cap segment 178 and the cap segment does not necessarily require a through hole.

Column segment 100 can be composed of a variety of materials, including but not limited to acrylonitrile butadiene styrene (ABS) plastic, high density polyethylene (HDPE), polyethylene terephthalate (PET), and polyvinyl chloride (PVC). Since the primary application of the column segment is in arena barrier construction in laser tag arenas, flame-retardant additives are required by some state laws. Advantageously, column segment 100 can be manufactured with an additive to provide the required flame-retardant features, such that when the flame is removed, the column segment will self-extinguish. Such resin compositions are typically considered Class A or Class B resins after the addition of the aforementioned additive. In addition, since laser tag arenas are designed to be dark, column segment 100 may be composed of phosphorescent plastic compositions such that UV (or black light) lamps create a glow-in-the-dark type effect when the UV light is reflected off the column segment. Column segment 100 may also be composed of a material having a coloring additive, which would allow removal of the marking grooves described supra.

Thus, it is seen that the objects of the present invention are efficiently obtained, although modifications and changes to the invention should be readily apparent to those having ordinary skill in the art, which modifications are intended to be within the spirit and scope of the invention as claimed. It also is understood that the foregoing description is illustrative of the present invention and should not be considered as limiting. Therefore, other embodiments of the present invention are possible without departing from the spirit and scope of the present invention. 

1. A column segment comprising: a body having at least one external channel; an upper protrusion extending from a top side of said body; and, a lower protrusion extending from a bottom side of said body.
 2. The column segment of claim 1 wherein said at least one external channel further comprises an outer angled wall arranged to receive a securing means and direct said securing means through said at least one external channel.
 3. The column segment of claim 1 wherein said upper protrusion further comprises a plurality of locating slots located about said upper protrusion.
 4. The column segment of claim 3 wherein said upper protrusion further comprises a domed portion with a flat top extending away from said body and located radially inward of said locating slots.
 5. The column segment of claim 4 wherein said upper protrusion further comprises a first partially weakened groove located radially outward of said locating slots and a second partially weakened groove located about said generally flat top.
 6. The column segment of claim 5 further comprising a cap segment located in a top portion of said body upon removal of said first partially weakened groove.
 7. The column segment of claim 1 wherein said lower protrusion further comprises a plurality of projections located about an outer portion of said lower protrusion.
 8. The column segment of claim 7 wherein said lower protrusion further comprises a partially weakened groove located radially outward of said plurality of projections.
 9. The column segment of claim 7 further comprising a spacer segment located in a lower portion of said body upon removal of said partially weakened groove.
 10. The column segment of claim 1 wherein said lower protrusion further includes a domed recess.
 11. The column segment of claim 1 wherein said upper protrusion includes a domed portion and a plurality of locating slots, wherein said lower protrusion includes a domed recess and a plurality of projections, and wherein a first column segment is stackable with a second column segment by said domed portion and said locating slots of said first column segment matingly engaging with said domed recess and said projections of said second column segment.
 12. The column segment of claim 1 wherein said upper protrusion and said lower protrusion each further comprise a centrally located through hole, wherein said through holes for both said upper and lower protrusions are aligned with respect to each other.
 13. The column segment of claim 12 wherein said through holes traverse the length of said column segment.
 14. The column segment of claim 1 wherein said body is generally cylindrical and symmetrical.
 15. A column segment assembly comprising: at least one column segment, wherein each column segment includes an upper protrusion, a lower protrusion, and a through hole, and wherein each subsequent column segment is stacked atop a preceding column segment if said column segment assembly includes more than one column segment; a final column segment having an upper protrusion, a lower protrusion, a through hole, an internal shoulder for securing a mounting plate, and a mounting nut; a mounting rod; and, wherein said final column is stacked atop said at least one column segment and said mounting rod traverses through said through holes in said at least one column segment and said lower protrusion of said final column segment, and wherein said mounting rod is secured within said final column segment to said mounting plate by said mounting nut.
 16. The column segment assembly of claim 15 wherein said final column segment lower protrusion receives said at least one column segment upper protrusion.
 17. The column segment assembly of claim 15 wherein said upper protrusion of said column segment includes a plurality of locating slots and said lower protrusion of said final column segment comprises a plurality of projections.
 18. The column segment assembly of claim 17 wherein said plurality of projections matingly engages with said plurality of locating slots.
 19. A laser tag arena comprising: a plurality of column segments each having an upper protrusion; a lower protrusion; and, at least one external channel having an angled outer surface; a final column segment having an upper protrusion; a lower protrusion; at least one external channel having an angled outer surface; an internal shoulder securing a mounting plate; and, a mounting nut; a floor having at least one mounting rod extending thereform and traversing through said plurality of column segments, said lower protrusion of said final column segment, and said mounting plate, wherein said mounting nut secures said mounting rod in place through said column segments; a retaining wall; and, wherein said retaining wall is located in at least one external channel of at least one column segment in said plurality of column segments or in said final column segment.
 20. The laser tag arena of claim 19 further comprising a plurality of fasteners securing said retaining wall in at least one of said external channels in at least one of said column segments. 